Lens Summary
Brand: Irix
Also Known As: Irix 11mm f/4
Lens Type: Prime Lens
Format: Full Frame / FX
Focus: Manual Focus
Lens Mount: Canon EF, Nikon F, Pentax K
Release Date: 2017-03-02
MSRP Price: $774.95
Made in: South Korea
Production Status: In Production
Lens Description: Distinguished by its refined physical construction, the 11mm f/4 Blackstone Lens from Irix is an ultra-wide prime designed for Nikon F-mount DSLRs. As a rectilinear lens, the advanced optical layout makes use of aspherical, extra-low dispersion, and high-refractive index elements to control distortion and aberrations for accurate, and sharp rendering with a high degree of clarity and color accuracy. Additionally, a Neutrino coating has also been applied to the lens to control flare and ghosting for improved contrast when working in strong lighting conditions.
Photography Life Review Summary: Anybody buying this lens should know that this is a manual-focus-only lens. In this ultra-wide spectrum, it is not such a problem – Irix offers a well-designed manual focus ring with hyperfocal scale, focus lock and focus snap at infinity. The Irix 11mm f/4 is a lens for rather special purposes and I do not recommend starting with it to anyone who has not photographed with an ultra wide-angle lens yet. Creative and advanced photographers looking for new tools and perspectives may feel attracted to this lens though, so I would certainly recommend them to look into this offering from Irix. Read the full IRIX 11mm f/4 Blackstone Review by Photography Life.
IRIX 11mm f/4 Blackstone Specifications
Lens Specifications | |
---|---|
Lens Type | Prime Lens |
Focal Length | 11mm |
Mount Type | Canon EF, Nikon F, Pentax K |
Format | Full Frame / FX |
Compatible Format(s) | Full Frame / APS-C |
Compatible with Teleconverters | No |
Image Stabilization | No |
Aperture Information | |
Aperture Ring | No |
Maximim Aperture | f/4 |
Minimum Aperture | f/22 |
Maximum Angle of View (Full frame or larger format) | 126° |
Optical Information | |
Lens Elements | 16 |
Lens Groups | 10 |
Diaphragm Blades | 9 (Rounded) |
Extra-Low Dispersion Glass Elements | 2 |
Special Glass Elements | Four HR Elements |
Aspherical Elements | 3 |
Nano Coating | Yes |
Focus Information | |
Focus | Manual Focus |
Built-in Focus Motor | No |
Minimum Focus Distance | 10.83" (27.5 cm) |
Filter Information | |
Filter Size | N/A |
Accepts Filter Type | N/A |
Physical Characteristics | |
Weather / Dust Sealing | Yes |
Mount Material | Metal |
Dimensions | 4.65 x 4.06" (118 x 103 mm) |
Weight | 1.74 lb (790 g) |
Other Information | |
Available in Colors | Black |